Business Segments, Concentration of Credit Risk and Significant Customers - Schedule of Revenue from Shipment of Product and Licensing of its Technologies to Customers by Geographical Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Business Segments
Total net revenue	$ 1,971	$ 1,206	$ 5,199	$ 7,792
North America [Member]
Business Segments
Total net revenue	1,494	930	4,112	6,004
Japan [Member]
Business Segments
Total net revenue	343	179	593	1,431
Taiwan [Member]
Business Segments
Total net revenue	93	$ 97	340	225
Rest of world [Member]
Business Segments
Total net revenue	$ 41		$ 154	$ 132